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volcanism

noun

vol·​ca·​nism ˈväl-kə-ˌni-zəm How to pronounce volcanism (audio)
ˈvȯl-
: volcanic action or activity

Examples of volcanism in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Atalay Ayele, a geologist at Addis Ababa University, said such eruptions occur because Ethiopia is situated along an active rift system where volcanism and earthquakes are frequent. Brittany Williams, Arkansas Online, 26 Nov. 2025 On Earth, these shifting plates drive volcanism and rock weathering, which are key to carbon cycling. Morgan Underwood, The Conversation, 19 Nov. 2025 Prior work noted one possible origin of this ice was volcanism, which could disgorge large amounts of water vapor. Charles Q. Choi, Space.com, 22 Oct. 2025 As heat accumulates in the interior, the Earth in Kane’s simulations would experience an uptick in volcanism lasting for about 15 million years. Quanta Magazine, 15 Sep. 2025 See All Example Sentences for volcanism

Word History

First Known Use

1830, in the meaning defined above

Time Traveler
The first known use of volcanism was in 1830

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Cite this Entry

“Volcanism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/volcanism. Accessed 3 Dec. 2025.

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